Geometry · Area, Surface Area & Volume
Lateral Area
HSG-GMD.A.3
Definition
The total area of the side surfaces of a solid, excluding its bases.
Examples
- Lateral area includes only the side surface, not the top or bottom base.
- A cylinder's lateral area is the curved side, not the two circular ends.
Key rule
Lateral area excludes the base(s); surface area includes them.
Memory hook
Just the sides — no bases counted.